Children may show an interest in clothes or toys that society tells us are more often associated with the opposite gender, or they may be unhappy with their physical sex characteristics. However, this type of behaviour is also reasonably common in childhood and is considered part of growing up. It does not mean that all children behaving this way have Gender Dysphoria or other gender identity issues. A small number of children may feel lasting and severe distress, which gets worse as they get older.
In younger children, it is common to see emotional and behavioural difficulties. For teenagers, there are higher rates of depression, anxiety, self-harm and suicide attempts. This often happens around puberty, when young people might feel that their physical appearance does not match their gender identity. This feeling can continue into adulthood with some people having a strong desire to change parts of their physical appearance, such as facial hair or breasts.
For more information: https://raisingchildren.net.au/pre-teens/development/pre-teens-gender-diversity-and-gender-dysphoria/gender-identity